/cvmfs/atlas.cern.ch/repo/sw/ASG/AnalysisBase/2.4.31/AthContainers/AthContainers/PackedParameters.h

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// This file's extension implies that it's C, but it's really -*- C++ -*-.
// $Id$
#ifndef ATHCONTAINERS_PACKEDPARAMETERS_H
#define ATHCONTAINERS_PACKEDPARAMETERS_H


#include "AthContainersInterfaces/AuxDataOption.h"
#include <limits>
#include <stdint.h>


namespace SG {


class PackedParameters
{
public:
  PackedParameters();


  PackedParameters (uint8_t nbits, uint8_t flags);


  template <class T>
  PackedParameters(T);


  uint8_t nbits() const;

 
  uint8_t nmantissa() const;


  uint8_t flags() const;


  float scale() const;


  bool isSigned() const;


  bool isFloat()  const;


  bool hasScale() const;


  bool rounding() const;


  bool setNbits (uint8_t nbits);


  bool setNmantissa (uint8_t nmantissa);


  bool setScale (float scale);


  bool setSigned (bool flag);


  bool setRounding (bool flag);


  bool setFloat (bool flag);


  static bool isValidOption (const AuxDataOption& option);


  bool setOption (const AuxDataOption& option);


  enum {
    FLAG_IS_SIGNED = (1<<0),
    FLAG_IS_FLOAT  = (1<<1),
    FLAG_HAS_SCALE = (1<<2),
    FLAG_ROUNDING  = (1<<3),
  };


private:
  uint8_t m_nbits;

  uint8_t m_nmantissa;

  float   m_scale;

  uint8_t m_flags;
};


} // namespace SG


#include "AthContainers/PackedParameters.icc"


#endif // not ATHCONTAINERS_PACKEDPARAMETERS_H

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